In 2003, we took the lead in using pure blast-furnace gas in the two-beam kilns；
In 2004, we took the lead in using pure coke oven gas in the two-beam kilns；
In 2005, we took the lead in using blast-furnace and coke oven mixed gas in the two-beam kilns；
In 2006, we took the lead in using tail gas of acetylene furnace in the two-beam kilns；
In 2007, we took the lead in using pulverized coal and coal gas the mixed fuel in the two-beam kilns；
In 2008, we took the lead in using producer purification gas combustion technology in the two-beam kilns；
In 2010，we took the lead in using tail gas of yellow phosphorus in the two-beam kilns；
In 2011, we successfully developed the annular shaft kiln and signed the 500TPD contract and 600 TPD contract with Yili Chemical and Dongyuan Technology respectively, using this kiln type in calcium carbide industry；
In 2012, we successfully developed double shaft parallel flow regenerative lime kiln。